two wires of equal length one of copper and other of nichrome have the same resistance. which wire will be thicker?
Answers
Answered by
19
copper has less resistivity then nichrome
and we know relation
R=rl/A
where R is resistance , r is resistivity , l is length of wire and A is cross section area.
here question ask both wires have same resistance and same length
it means
r=RA/l=(R/l) A=kA
hence
here resistivity related wire thickness
but above we were ask resistivity less in copper and high in nichrome.
so, nichrome will be thicker.
and we know relation
R=rl/A
where R is resistance , r is resistivity , l is length of wire and A is cross section area.
here question ask both wires have same resistance and same length
it means
r=RA/l=(R/l) A=kA
hence
here resistivity related wire thickness
but above we were ask resistivity less in copper and high in nichrome.
so, nichrome will be thicker.
abhi178:
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Answered by
3
Answer:
Nichrome will be more thicker
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